A word from Kris, the 'Ghost Bride and Groom' costume creator:

Me and my wife, Michelle, are wearing the costumes. My wife came up with the idea because we've been married for twelve years. We have never been dressed up before and we thought it would be so much fun to dress up together. For the groom, grab a jacket and pants out of your closet that you will never wear again. If you don't have one, find someone that is willing to donate it. Spray paint it silver and white. You can find a bow tie, top-hat, corsage, and vail cheap spending maybe $10. Buy silver and black face paint and this concludes the groom. Grab an old white wedding dress and do the same to it like the suit. Add fake blood to both outfits.